Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Characteristics of fluctuating pressure measurement systems utilising lengths of 3D-Printed tubing
Abstract The use of pressure tubing is common in wind engineering, aerodynamics and other studies for measuring fluctuating surface pressures. However, thin models or a model with complicated geometry can result in it being unfeasible to route these tubes to their connection on the model. 3D-printing tubes integral to the model is an attractive solution. This introduces two concerns: the tubes may have a differing response depending on their printed length relative to the net tubing system length, and cross-communication may exist between adjacent 3D-Printed tubes due to the compliance of thin dividing walls and material porosity. Six differing lengths of 3D-Printed tubes were tested for their frequency response in comparison to a system of homogeneous vinyl tubing. Testing was conducted for a 1500 mm tubing system with up to 200 mm printed-length, sampling at 400 Hz. It is seen that the 3D-Print length has negligible effect on results for these conditions. Further testing examined the potential for cross-communication in parallel printed tubes with wall thicknesses between 0.5 and 1.5 mm. It is shown that the printed tubes did not exhibit cross-communication, and so can be used for further research as part of a larger tubing system.
Highlights Tubing systems can be difficult to fit in a test model. 3D-Printing tubes integral to the model can these geometric issues. Tubing systems distort transient pressure measurements. It is unclear if 3D-Printed tubes may influence this distortion. 3D-Printed tubes using an SLA printer are seen to not suffer from signal leakage for minimum tube separation down to 0.5 mm. 3D-Printed tube sections of various lengths have no significant influence on tubing system spectral gain. 3D-Printed tube sections have insignificant effect on the frequency response, and do not alter signal correction. 3D-Printed tubes can be used in wind tunnel testing with an SLA printer, although other printers may not be as suitable.
Characteristics of fluctuating pressure measurement systems utilising lengths of 3D-Printed tubing
Abstract The use of pressure tubing is common in wind engineering, aerodynamics and other studies for measuring fluctuating surface pressures. However, thin models or a model with complicated geometry can result in it being unfeasible to route these tubes to their connection on the model. 3D-printing tubes integral to the model is an attractive solution. This introduces two concerns: the tubes may have a differing response depending on their printed length relative to the net tubing system length, and cross-communication may exist between adjacent 3D-Printed tubes due to the compliance of thin dividing walls and material porosity. Six differing lengths of 3D-Printed tubes were tested for their frequency response in comparison to a system of homogeneous vinyl tubing. Testing was conducted for a 1500 mm tubing system with up to 200 mm printed-length, sampling at 400 Hz. It is seen that the 3D-Print length has negligible effect on results for these conditions. Further testing examined the potential for cross-communication in parallel printed tubes with wall thicknesses between 0.5 and 1.5 mm. It is shown that the printed tubes did not exhibit cross-communication, and so can be used for further research as part of a larger tubing system.
Highlights Tubing systems can be difficult to fit in a test model. 3D-Printing tubes integral to the model can these geometric issues. Tubing systems distort transient pressure measurements. It is unclear if 3D-Printed tubes may influence this distortion. 3D-Printed tubes using an SLA printer are seen to not suffer from signal leakage for minimum tube separation down to 0.5 mm. 3D-Printed tube sections of various lengths have no significant influence on tubing system spectral gain. 3D-Printed tube sections have insignificant effect on the frequency response, and do not alter signal correction. 3D-Printed tubes can be used in wind tunnel testing with an SLA printer, although other printers may not be as suitable.
Characteristics of fluctuating pressure measurement systems utilising lengths of 3D-Printed tubing
Kay, N.J. (Autor:in) / Oo, N.L. (Autor:in) / Richards, P.J. (Autor:in) / Sharma, R.N. (Autor:in)
09.02.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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